WO2022228171A1 - Procédé et appareil de réglage de la puissance d'émission d'un signal de référence - Google Patents

Procédé et appareil de réglage de la puissance d'émission d'un signal de référence Download PDF

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Publication number
WO2022228171A1
WO2022228171A1 PCT/CN2022/087342 CN2022087342W WO2022228171A1 WO 2022228171 A1 WO2022228171 A1 WO 2022228171A1 CN 2022087342 W CN2022087342 W CN 2022087342W WO 2022228171 A1 WO2022228171 A1 WO 2022228171A1
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WIPO (PCT)
Prior art keywords
information
reference signal
positioning reference
transmit power
pieces
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PCT/CN2022/087342
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English (en)
Chinese (zh)
Inventor
李成
王艺
高鑫
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华为技术有限公司
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Publication of WO2022228171A1 publication Critical patent/WO2022228171A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/248—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where transmission power control commands are generated based on a path parameter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present application relates to the field of communication technology, and more particularly, to a method and apparatus for adjusting the transmission power of a reference signal.
  • the positioning technology based on time of arrival (TOA) is a widely used positioning technology.
  • TOA time of arrival
  • the location accuracy of the terminal device obtained by the TOA-based positioning technology depends on the signal strength of the positioning reference signal received by the access network device.
  • the signal strength is associated with the transmit power at which the terminal device transmits the positioning reference signal.
  • the signal strength of the positioning reference signal received by the access network equipment participating in the positioning will also change, resulting in deviations in the accuracy of the positioning result of the terminal equipment. Therefore, how to dynamically adjust the transmit power of the positioning reference signal is an urgent problem to be solved.
  • the present application provides a method and apparatus for adjusting the transmit power of a reference signal, according to which the dynamic adjustment of the transmit power of the positioning reference signal can be realized.
  • a first aspect provides a method for adjusting the transmit power of a reference signal.
  • the method includes: a positioning management device receives N pieces of quality information sent by N pieces of access network equipment, and the N pieces of quality information are associated with the N pieces of access network equipment one by one. Correspondingly, each of the N pieces of quality information is obtained by the corresponding access network device measuring the first positioning reference signal, and N is a positive integer.
  • the positioning management device sends first information to the terminal device, where the first information indicates the transmit power for the first positioning reference signal The adjustment is made so that the second threshold is less than or equal to the third threshold.
  • N is greater than or equal to 2, or N is a positive integer greater than or equal to 3.
  • the quality information is quality information corresponding to a measurement result obtained by the access network device measuring the first positioning reference signal, where the measurement result includes time of arrival (TOA) information or reference time of arrival (reference time of arrival, RTOA) information.
  • TOA time of arrival
  • RTOA reference time of arrival
  • the positioning management device receives N pieces of quality information fed back by N pieces of access network equipment, and when the N pieces of quality information meet certain conditions, adjusts the transmission power of the positioning reference signal, so that the transmission of the positioning reference signal can be improved.
  • the power is kept within a reasonable range, which can not only meet the accuracy requirements for the positioning of the terminal equipment, but also avoid excessive power consumption of the terminal equipment.
  • the first information indicating that the adjustment of the transmit power of the first positioning reference signal includes: when the quantity of quality information greater than the first threshold among the N pieces of quality information is less than the first When there are two thresholds, the first information indicates to increase the transmit power of the first positioning reference signal. When the number of quality information greater than the first threshold among the N pieces of quality information is greater than the third threshold, the first information indicates to reduce the transmit power of the first positioning reference signal.
  • the first information includes index information of the first positioning reference signal.
  • the first information includes index information and adjustment amount information.
  • the adjustment amount may be determined by the positioning management device according to the power headroom information corresponding to the first positioning reference signal; in another possible implementation manner, the adjustment amount may be a preconfigured value. Or the adjustment amount is determined in other ways, which is not limited in this application.
  • the positioning management device can obtain the power headroom information corresponding to the first positioning reference signal from the terminal device, and according to the obtained power headroom information, the positioning management device can determine a more reasonable transmission power of the positioning reference signal adjustment amount.
  • sending the first information by the location management device to the terminal device includes: the location management device sends the first information to the terminal device through the first access network device, and the first access network device sends the first information to the terminal device.
  • the network equipment is the service access network equipment of the terminal equipment.
  • the positioning management device sends the first information to the terminal device through an LTE positioning protocol LPP message.
  • the method further includes: the positioning management device sends second information to the terminal device through the first access network device, where the second information indicates the minimum transmit power of the positioning reference signal , the first access network device is a serving access network device of the terminal device. Or, the positioning management device sends the second information to the terminal device through an LTE positioning protocol LPP message.
  • the minimum transmit power may be the minimum transmit power for all positioning reference signals sent by the terminal device.
  • the terminal device when the terminal device transmits the positioning reference signal with the minimum transmit power, the minimum accuracy of the position result of the terminal device calculated by the positioning management device can be guaranteed.
  • a second aspect provides a method for adjusting the transmit power of a reference signal, the method comprising: a serving access network device receiving first information from a positioning management device, where the first information indicates to adjust the transmit power of the first positioning reference signal.
  • the first information is generated by the positioning management device according to N pieces of quality information received from N pieces of access network equipment.
  • the quality information is obtained by the corresponding access network device measuring the first positioning reference signal, the quantity of the quality information greater than the first threshold among the N pieces of quality information is less than the second threshold or greater than the third threshold, N is a positive integer, and the second The threshold is less than or equal to the third threshold.
  • the serving access network device sends the first information to the terminal device.
  • N is greater than or equal to 2, or N is a positive integer greater than or equal to 3.
  • the quality information is quality information corresponding to a measurement result obtained by the access network device measuring the first positioning reference signal, where the measurement result includes TOA information or RTOA information.
  • the positioning management device receives N pieces of quality information fed back by N pieces of access network equipment, and when the N pieces of quality information meet certain conditions, adjusts the transmission power of the positioning reference signal, so that the transmission of the positioning reference signal can be improved.
  • the power is kept within a reasonable range, which can not only meet the accuracy requirements for the positioning of the terminal equipment, but also avoid excessive power consumption of the terminal equipment.
  • sending the first information by the serving access network device to the terminal device includes: the serving access network device sends the first information to the terminal device through media access control MAC signaling , the MAC signaling includes a first bit group, the first bit group includes a first bit field and a second bit field, the first bit field indicates the index of the first positioning reference signal, and the second bit field indicates the transmission of the first positioning reference signal The way the power is adjusted.
  • the adjustment method includes increasing or decreasing the transmit power of the first positioning reference signal.
  • the adjustment method includes increasing or decreasing the transmit power of the first positioning reference signal, and an adjustment amount of the transmit power of the first positioning reference signal.
  • the MAC signaling may include multiple bit groups, the first bit field of each bit group in the multiple bit groups indicates an index of a reference signal, and the second bit field indicates the transmit power of the reference signal adjustment method.
  • sending the first information by the serving access network device to the terminal device includes: the serving access network device uses media access control MAC signaling and downlink control information DCI signaling
  • the first information is sent to the terminal device, the MAC signaling indicates the index of the first positioning reference signal, and the DCI signaling indicates the adjustment mode of the transmission power of the first positioning reference signal.
  • the adjustment method includes increasing or decreasing the transmit power of the first positioning reference signal.
  • the adjustment method includes increasing or decreasing the transmit power of the first positioning reference signal, and an adjustment amount of the transmit power of the first positioning reference signal.
  • the MAC signaling includes a third bit field, the third bit field includes M bits, and each bit in the M bits corresponds to a positioning reference signal sent by the terminal device.
  • the MAC signaling indicates that the transmission power of the positioning reference signal corresponding to the bit needs to be adjusted.
  • the MAC signaling indicates that the transmission power of the positioning reference signal corresponding to the bit does not need to be adjusted.
  • the total number of bits included in the third bit field is greater than or equal to M, that is, the M bits may only be a part of the bits in the third bit field.
  • M is a positive integer greater than or equal to 1.
  • the positioning reference signal used to indicate the transmission power to be adjusted cannot target one or more specific positioning reference signals, or it will cause relatively high physical layer bit signaling
  • using MAC signaling can more flexibly indicate the positioning reference signal whose transmission power is to be adjusted, compared to using DCI signaling to send the index information of the positioning reference signal.
  • the method further includes: the serving access network device acquires second information from the positioning management device, where the second information indicates the minimum transmit power of the positioning reference signal.
  • the serving access network device sends the second information to the terminal device.
  • a method for adjusting the transmission power of a reference signal includes: a terminal device receives first information and second information sent by a positioning management device, where the first information indicates that the transmission power of the first positioning reference signal is to be adjusted. Adjustment, the second information indicates the minimum transmit power of the positioning reference signal.
  • the first information is generated by the positioning management device according to N pieces of quality information received from N pieces of access network equipment.
  • the quality information is obtained by the corresponding access network device measuring the first positioning reference signal, the quantity of the quality information greater than the first threshold among the N pieces of quality information is less than the second threshold or greater than the third threshold, N is a positive integer, and the second The threshold is less than or equal to the third threshold.
  • the terminal device determines the transmit power of the first positioning reference signal according to the first information and the second information.
  • N is greater than or equal to 2, or N is a positive integer greater than or equal to 3.
  • the quality information is quality information corresponding to a measurement result obtained by the access network device measuring the first positioning reference signal, where the measurement result includes TOA information or RTOA information
  • the terminal device determines the transmission power of the positioning reference signal according to the first information and the minimum transmission power, and ensures that the transmission power of the terminal device to transmit the positioning reference signal is greater than or equal to the minimum transmission power, so as to ensure that the positioning management device calculates and obtains The minimum accuracy of the location result of the end device.
  • determining, by the terminal device, according to the first information and the second information, the transmit power of the first positioning reference signal includes: the terminal device determining the first positioning reference signal according to the first information the third transmit power.
  • the terminal device determines that the transmission power of the first positioning reference signal is the minimum transmission power.
  • the terminal device determines that the transmit power of the first positioning reference signal is the third transmit power.
  • the terminal device determines that the transmission power of the first positioning reference signal is the maximum transmission power.
  • a location management device comprising means for performing the method in the first aspect or various implementations thereof.
  • an access network device comprising: a receiving unit configured to receive first information from a positioning management device, where the first information indicates to adjust the transmit power of the first positioning reference signal.
  • the first information is generated by the positioning management device according to N pieces of quality information received from N pieces of access network equipment.
  • the quality information is obtained by the corresponding access network device measuring the first positioning reference signal, the quantity of the quality information greater than the first threshold among the N pieces of quality information is less than the second threshold or greater than the third threshold, N is a positive integer, and the second The threshold is less than or equal to the third threshold.
  • the sending unit is used for sending the first information to the terminal device.
  • N is greater than or equal to 2, or N is a positive integer greater than or equal to 3.
  • the sending unit configured to send the first information to the terminal device includes: the sending unit sends the first information to the terminal device through media access control MAC signaling, the MAC signaling Let include a first bit group, the first bit group includes a first bit field and a second bit field, the first bit field indicates the index of the first positioning reference signal, and the second bit field indicates the adjustment of the transmission power of the first positioning reference signal Way.
  • the adjustment method includes increasing or decreasing the transmit power of the first positioning reference signal.
  • the adjustment method includes increasing or decreasing the transmit power of the first positioning reference signal, and an adjustment amount of the transmit power of the first positioning reference signal.
  • the sending unit configured to send the first information to the terminal device, includes: the sending unit sends the terminal device to the terminal device through media access control MAC signaling and downlink control information DCI signaling
  • the first information is sent, the MAC signaling indicates the index of the first positioning reference signal, and the DCI signaling indicates the adjustment mode of the transmission power of the first positioning reference signal.
  • the adjustment method includes increasing or decreasing the transmit power of the first positioning reference signal.
  • the adjustment method includes increasing or decreasing the transmit power of the first positioning reference signal, and an adjustment amount of the transmit power of the first positioning reference signal.
  • the receiving unit is further configured to acquire second information from the positioning management device, where the second information indicates the minimum transmit power of the positioning reference signal.
  • the sending unit is further configured to send the second information to the terminal device.
  • a terminal device comprising: a transceiver unit configured to receive first information and second information sent by a positioning management device, where the first information indicates to adjust the transmit power of the first positioning reference signal, The second information indicates the minimum transmit power of the positioning reference signal.
  • the first information is generated by the positioning management device according to N pieces of quality information received from N pieces of access network equipment.
  • the quality information is obtained by the corresponding access network device measuring the first positioning reference signal, the quantity of the quality information greater than the first threshold among the N pieces of quality information is less than the second threshold or greater than the third threshold, N is a positive integer, and the second The threshold is less than or equal to the third threshold.
  • the processing unit is configured to determine the transmit power of the first positioning reference signal according to the first information and the second information.
  • N is greater than or equal to 2, or N is a positive integer greater than or equal to 3.
  • the processing unit configured to determine the transmit power of the first positioning reference signal according to the first information and the second information, includes: the processing unit determines the first positioning according to the first information The third transmit power of the reference signal. When the third transmission power is less than or equal to the minimum transmission power, the processing unit determines that the transmission power of the first positioning reference signal is the minimum transmission power. When the third transmit power is greater than the minimum transmit power and less than the maximum transmit power of the terminal device, the processing unit determines that the transmit power of the first positioning reference signal is the third transmit power. When the third transmission power is greater than the maximum transmission power of the terminal device, the processing unit determines that the transmission power of the first positioning reference signal is the maximum transmission power.
  • a seventh aspect provides a communication system, the communication system includes a positioning management device and an access network device, wherein the positioning management device is configured to execute the method in the first aspect or various implementations thereof, and the access network device is configured to execute The method of the second aspect or various implementations thereof.
  • a communication apparatus including at least one processor.
  • the memory is used to store a computer program, and when the communication apparatus is running, the processor executes the computer program or instructions stored in the memory, so that the communication apparatus performs the method of the first aspect or various implementations thereof.
  • the communication apparatus is caused to perform the method of the second aspect or various implementations thereof.
  • the communication apparatus is caused to perform the method of the third aspect or various implementations thereof.
  • the memory may be located in the processor, or may be implemented by a chip independent of the processor, which is not specifically limited in this application.
  • a computer-readable storage medium comprising a computer program, which, when executed on a computer, causes the computer to perform the method of the first aspect or various implementations thereof.
  • a computer is caused to perform the method of the second aspect or various implementations thereof.
  • a computer is caused to perform the method of the third aspect or various implementations thereof.
  • a chip is provided on which a processing circuit is provided, and the processing circuit is configured to execute the method of the first aspect or various implementations thereof.
  • processing circuitry is adapted to perform the method of the second aspect or various implementations thereof.
  • processing circuitry is adapted to perform the method of the third aspect or various implementations thereof.
  • a computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes the computer to execute the first aspect or various implementations thereof method in .
  • a computer is caused to perform the method of the second aspect or various implementations thereof.
  • a computer is caused to perform the method of the third aspect or various implementations thereof.
  • a twelfth aspect provides a method for adjusting the transmit power of a reference signal, including: a positioning management device receives N pieces of quality information sent by N pieces of access network equipment, and the N pieces of quality information are in one-to-one correspondence with the N pieces of access network equipment, Each of the N pieces of quality information is obtained by measuring the first positioning reference signal by the corresponding access network device, and N is a positive integer.
  • the positioning management device sends the first information.
  • the location management device sends third information.
  • the first information and the third information indicate to adjust the transmit power of the first positioning reference signal, and the second threshold is less than or equal to the third threshold.
  • the first quantity is the quantity of quality information greater than the first threshold among the N pieces of quality information.
  • the first information when the first number is less than the second threshold, the first information indicates to increase the transmit power of the first positioning reference signal. When the first number is greater than the third threshold, the first information indicates to reduce the transmission power of the first positioning reference signal.
  • both the first information and the third information include index information of the first positioning reference signal.
  • both the first information and the third information include index information and information on an adjustment amount of the transmission power of the first positioning reference signal.
  • sending the first information by the positioning management device includes: the positioning management device sends the first information to the terminal device through the serving access network device. Or, the positioning management device sends the first information to the terminal device through a Long Term Evolution Positioning Protocol LPP message.
  • Sending the third information by the positioning management device includes: the positioning management device sends the third information to the terminal device through the serving access network device. Or, the positioning management device sends the third information to the terminal device through a Long Term Evolution Positioning Protocol LPP message.
  • FIG. 1 shows an architecture of a positioning system to which this embodiment of the present application is applicable.
  • FIG. 2 shows a positioning scenario of the solution proposed in this application.
  • FIG. 3 shows an embodiment of the solution proposed in this application.
  • FIG. 4 shows a schematic block diagram of a communication device provided by the present application.
  • FIG. 5 shows a schematic block diagram of the communication apparatus provided by the present application.
  • the technical solution proposed in this application can be applied to the positioning system architecture shown in FIG. 1 .
  • the network elements involved mainly include terminal equipment, access network, and core network.
  • the terminal device involved in the embodiments of the present application is an entity on the user side that is used to receive or transmit signals, and is used to send uplink signals to network devices or receive downlink signals from network devices. Included are devices that provide voice and/or data connectivity to a user, such as may include handheld devices with wireless connectivity, or processing devices connected to a wireless modem.
  • the terminal equipment may communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • RAN radio access network
  • the terminal equipment may include user equipment (UE), V2X terminal equipment, wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station) , remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), wearable devices, in-vehicle devices, home appliances, etc.
  • IoT Internet of things
  • subscriber unit subscriber unit
  • subscriber station subscriber station
  • mobile station mobile station
  • remote station remote station
  • access point access point
  • AP remote terminal
  • remote terminal remote terminal
  • access terminal access terminal
  • user terminal user terminal
  • user agent user agent
  • user equipment
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. Wait.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • Use such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the various terminal devices described above if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as on-board terminal equipment.
  • the on-board terminal equipment is also called on-board unit (OBU). ).
  • the core network involved in the embodiments of the present application includes a location management function (location management function, LMF) and a mobility management function (access and mobility management function, AMF).
  • LMF location management function
  • AMF access and mobility management function
  • the LMF is also called a positioning server or a positioning management device, and the LMF and the AMF are connected through the NL1 interface.
  • the LMF is responsible for supporting different types of location services related to the terminal, including locating the terminal and delivering assistance data to the terminal.
  • AMF can receive terminal-related location service requests from 5th generation core network location services (5GC LCS) entities, or AMF itself can initiate some location services on behalf of a specific terminal and forward location service requests to LMF.
  • 5GC LCS 5th generation core network location services
  • the core network may further include a data storage management network element and a network opening network element.
  • the data storage management network element is a network element used to store and manage the data of the terminal equipment.
  • UDM unified data management function network element
  • the network exposure network element is responsible for providing network functions to third-party applications.
  • the core network may also include other network elements, which are not listed here.
  • core network elements in the core network may be co-located, or the functions of one core network element may be jointly implemented by several network elements.
  • the interaction between these core network elements is an internal operation or can be omitted.
  • the access network involved in the embodiments of the present application may include one or more devices on the access network.
  • the access network device may also be referred to as a base station, or a RAN node, or a RAN device.
  • the access network device is an entity on the network side for transmitting and/or receiving signals, and acts as a router between the terminal and the rest of the access network, where the rest of the access network may include an IP network and the like.
  • the access network equipment can also coordinate the attribute management of the air interface.
  • the access network equipment may be an evolutional Node B (evolutional Node B, eNB or e-NodeB) in LTE, and an eNB is a device deployed in a radio access network that meets the 4G standard and provides a wireless communication function for a terminal.
  • the access network device can also be a new radio controller (NR controller), a gNode B (gNB) in a 5G system, a centralized unit, a new wireless base station, or a new wireless base station.
  • NR controller new radio controller
  • gNB gNode B
  • It is a remote radio module, which can be a micro base station (also called a small cell), a relay, a distributed unit, or a macro base station in various forms.
  • transmission measurement function, TMF) or transmission point (transmission point, TP), or any other wireless access device, or a base station in next-generation communications, the embodiments of the present application are not limited thereto.
  • the positioning scenario is a scenario in which the terminal device is located by using the uplink positioning method.
  • the scenario includes: the terminal device, the service of the terminal device Base station, the neighboring cell base station of the terminal equipment. Only two neighboring cell base stations are shown in FIG. 2 , but in practical application, the number of neighboring cell base stations may be more than two.
  • FIG. 3 shows a schematic flowchart of an example of a method for adjusting the transmit power of a positioning reference signal proposed in the present application, and the method can be applied to the communication system shown in FIG. 1 .
  • the method includes:
  • the LMF receives a location service request for device #A (an example of a terminal device), and determines to initiate an uplink positioning process for device #A.
  • a location service request for device #A an example of a terminal device
  • the LMF may receive a location service request for device #A from an access and mobility management function (AMF).
  • AMF access and mobility management function
  • the LMF sends second information, where the second indication information is used to instruct the device #A to send the minimum transmit power of the positioning reference signal.
  • the LMF may send the second information to the device #A through an LTE positioning protocol (LTE positioning protocol, LPP) message. Accordingly, device #A receives the second information.
  • LTE positioning protocol LTE positioning protocol, LPP
  • the LMF may send the second information to device #A through the first access network device.
  • the first access network device is the serving access network device of device #A.
  • S302 can be executed before S301, or can be executed after S301.
  • the LMF sends a first request message to the first access network device, where the first request message is used to request the first access network device to configure the positioning reference signal of the device #A.
  • the first access network device receives the first request information.
  • the LMF may send the first request message through an NR positioning protocol (NR positioning protocol a, NRPPa).
  • NR positioning protocol a NR positioning protocol a, NRPPa
  • the first access network device sends information #A to the device #A, where the information #A is used to configure the positioning reference signal of the device #A.
  • the information #A includes information about the second transmit power of the first positioning reference signal sent by the device #A.
  • the information #A further includes information about the transmit power of other positioning reference signals, that is, the first access network device may configure the transmit power of multiple positioning reference signals at one time. Accordingly, device #A receives information #A.
  • the first access network device may send the information #A through radio resource control (radio resource control, RRC) signaling.
  • RRC radio resource control
  • the method further includes S305, the first access network device sends a first response message to the LMF, the first response message indicates that the first access network device has successfully configured the positioning reference signal of device #A, and the first response message includes Information #A.
  • Device #A determines the first transmit power of the first positioning reference signal according to the information #A and the second information, and sends the first positioning reference signal at the first transmit power.
  • the device #A determines that the first transmit power of the first positioning reference signal is the minimum transmit power indicated by the second information.
  • the terminal device when the terminal device transmits the positioning reference signal with the minimum transmit power, the minimum accuracy of the position result of the terminal device calculated by the positioning management device can be guaranteed.
  • the device #A determines that the first transmit power of the first positioning reference signal is the second transmit power indicated by the information #A.
  • Device #A transmits the first positioning reference signal in the form of broadcast.
  • Device #A sends the first positioning reference signal in the form of beams, and the directions of the sending beams are N, where N is a positive integer.
  • N is greater than or equal to 2, or N is a positive integer greater than or equal to 3.
  • device #A may determine the first transmit power of other positioning reference signals, and send other positioning reference signals according to the determined first transmit power.
  • the LMF sends a second request message to the N access network devices, where the second request message is used to request the N access network devices to measure the first positioning reference signal sent by the device #A.
  • the N access network devices receive the second request message.
  • the N access network devices are access network devices that locate device #A
  • the N access network devices include a first access network device and a plurality of second access network devices
  • the second access network devices The network access device is the neighbor access network device of Device #A.
  • the N access network devices are used to monitor the broadcast information sent by the device #A.
  • the N access network devices have a corresponding relationship with the N directions in which the beam is sent. It should be understood that the information of the N directions may be pre-configured by the LMF for device #A. In a possible implementation manner, the LMF may send spatial beam relationship information in N directions and N resource information to the serving base station of device #A, and the serving base station configures the above information to device #A.
  • S307 may be performed simultaneously with S306, or S307 may be performed before S306, which is not limited in this application.
  • each of the N access network devices measures the first positioning reference signal sent by device #A according to the received second request message, and sends measurement information to the LMF.
  • the LMF receives N pieces of measurement information sent by N pieces of access network equipment.
  • Each of the N pieces of measurement information includes a measurement result obtained by the corresponding access network device based on the first positioning reference signal, and quality information of the measurement result. That is to say, the quality information is the quality information corresponding to the measurement result obtained by the access network device measuring the first positioning reference signal.
  • the measurement result information includes time of arrival (time of arrival, TOA) information or reference time of arrival (reference time of arrival, RTOA) information.
  • the LMF determines whether to adjust the transmit power of the first positioning reference signal according to the N pieces of received quality information.
  • the LMF determines not to adjust the transmit power of the first positioning reference signal. At this time, the position of the device #A calculated by the LMF according to the N pieces of measurement information is accurate and reliable, and there is no need to perform the steps described below.
  • the first threshold, the second threshold and the third threshold may be pre-configured in the LMF.
  • the specific values of the second threshold and the third threshold are associated with the number of access network devices participating in the positioning of the device #A, and the second threshold is less than or equal to the third threshold. For example, when the number of access network devices participating in the positioning of device #A is 10, the second threshold may be 6, and the third threshold may be 8.
  • the LMF determines to reduce the transmit power of the first positioning reference signal , thereby reducing the power consumption of device #A on the premise of ensuring the accuracy of the positioning result of device #A.
  • the LMF determines to increase the transmission of the first positioning reference signal power, thereby improving the accuracy of the location of device #A calculated by the LMF.
  • the LMF can determine whether the transmit power of the multiple positioning reference signals needs to be adjusted.
  • the LMF determines that the N pieces of quality information belong to case 2 or case 3, that is, the transmit power of the first positioning reference signal does not meet the expected requirements, the LMF also needs to perform the following steps.
  • the method further includes S310.
  • the LMF acquires power headroom information corresponding to the first positioning reference signal, and determines an adjustment amount of the transmit power of the first positioning reference signal according to the power headroom information.
  • the LMF may obtain the power headroom information from the device #A through the LPP message, or the LMF may obtain the power headroom information from the device #A through the first access network device, which is not limited in this application.
  • the adjustment amount of the transmit power should be less than the maximum transmit power of device #A minus the power headroom minus the minimum value of the first uplink positioning reference signal The value obtained after transmitting the power.
  • the LMF can obtain the power headroom information corresponding to the other positioning reference signals transmitted by device #A, and determine the adjustment value of the transmission power of other positioning reference signals.
  • the LMF can determine a more reasonable adjustment amount of the transmit power of the positioning reference signal.
  • the adjustment amount may be a preconfigured value.
  • the size of an adjustment amount may be increased or decreased each time, which may also be referred to as the size of a step size.
  • the adjustment amount is determined in other ways, which is not limited in this application.
  • the LMF notifies that the transmit power of the first positioning reference signal is adjusted.
  • the LMF may notify by sending the first information, that is, the first information indicates to adjust the transmit power of the first positioning reference signal.
  • the first information includes index information of the first positioning reference signal and information on the adjustment mode of the transmission power.
  • the LMF When the method does not include S310, if it is case 2 in S309, the LMF notifies to reduce the transmit power of the first positioning reference signal.
  • the LMF may notify by sending the first information, and the information of the adjustment mode in the first information indicates to reduce the transmit power of the first positioning reference signal. If it is case 3 in S309, the LMF notifies to increase the transmit power of the first positioning reference signal.
  • the LMF may notify by sending the first information, where the adjustment mode information in the first information indicates to increase the transmit power of the first positioning reference signal.
  • the LMF notifies to increase or decrease the transmit power of the first positioning reference signal.
  • the LMF may notify by sending the first information, and the adjustment method in the first information further includes the adjustment amount of the transmit power of the first positioning reference signal.
  • the first information includes the indices of the multiple positioning reference signals and the adjustment corresponding to each positioning reference signal in the multiple positioning reference signals way information.
  • the LMF sends the first information to the first access network device.
  • the first access network device receives the first information.
  • the LMF sends the first information to Device #A through an LPP message. Accordingly, device #A receives the first information.
  • the method further includes S312, the first access network device sends the first information to device #A.
  • the first information received by the first access network device from the LMF includes indices of multiple positioning reference signals and information about an adjustment mode corresponding to each positioning reference signal in the multiple positioning reference signals, and the multiple positioning reference signals include the first Positioning reference signal.
  • the first access network device sends the first information to device #A through media access control MAC signaling. Accordingly, device #A receives the first information.
  • the MAC signaling includes at least one bit group, and each bit group is used to indicate a positioning reference signal.
  • Each bit group includes a first bit field and a second bit field, the first bit field indicates the index of the positioning reference signal, and the second bit field indicates the adjustment mode of the transmission power of the positioning reference signal.
  • Table 1 For example, a possible format of the MAC signaling is shown in Table 1.
  • Table 1 represents a bit group, and there are 4 bit groups in total, that is, the transmit power of 4 positioning reference signals can be adjusted at a time, and each A bit group has 8 bits, of which the first bit field occupies the first 6 bits from left to right, that is, it can represent up to 64 reference signals, and the second bit field occupies the 7th and 7th bits from left to right. 8th bit.
  • the first information received by the first access network device from the LMF includes indexes of four positioning reference signals and information on an adjustment manner corresponding to each positioning reference signal.
  • the index of the first positioning reference signal is 0, and the adjustment method is to reduce it by 0.3dB.
  • the index of the second positioning reference signal is 1, and the adjustment method is to reduce it by 0.1 dB.
  • the index of the third positioning reference signal is 2, and the adjustment method is to increase by 0.3dB.
  • the index of the fourth positioning reference signal is 3, and the adjustment method is to increase by 0.1 dB.
  • "+” means to increase the transmit power
  • "-" means to reduce the transmit power
  • two bits can be used to indicate 4 ways of adjusting the transmit power.
  • "00" stands for "+0.1dB”
  • "01” stands for "-0.1dB”
  • “10” stands for "+0.3dB”
  • "11” stands for "-0.3dB”.
  • the first access network device sends the first information through MAC signaling, and the format of the MAC signaling may be as shown in Table 1.
  • the first bit group from top to bottom in Table 1 is used to indicate that the transmit power of the first positioning reference signal is reduced by 0.3dB; the second bit group is used to indicate that the transmit power of the second positioning reference signal is reduced by 0.1dB;
  • the bit group is used to indicate that the transmit power of the third positioning reference signal is increased by 0.3 dB;
  • the fourth bit group is used to indicate that the transmit power of the fourth positioning reference signal is increased by 0.1 dB.
  • the first information received by the first access network device from the LMF includes the indices of the two positioning reference signals and information about the adjustment mode corresponding to each positioning reference signal, that is, the number of positioning reference signals whose transmit power is to be adjusted. less than 4.
  • the first access network device may use the first bit group and the second bit group in the MAC signaling to send the first information, and configure the second preset value in the remaining two bit groups, the second preset value Indicates that the remaining two groups of bits do not indicate a positioning reference signal.
  • the first information received by the first access network device from the LMF includes the indices of the six positioning reference signals and information on the adjustment mode corresponding to each positioning reference signal, that is, the number of positioning reference signals whose transmit power is to be adjusted. more than 4.
  • the first access network device may send the first information through two MAC signalings. That is, each MAC signaling transmits a part of the first information.
  • the first information received by the first access network device from the LMF includes indexes of 10 positioning reference signals and information about the adjustment mode corresponding to each positioning reference signal, and the 10 positioning reference signals are sent by device #A. All positioning reference signals. If the information of the adjustment modes corresponding to the 10 positioning reference signals is the same, at this time, the first access network device may configure the first bit field of the four bit groups of the MAC signaling to be the third preset value, which is used to indicate The power of all positioning reference signals sent by device #A needs to be adjusted, and the second bit field of the 4-bit group is configured to a value corresponding to this adjustment method.
  • the first access network device sends the first information through MAC signaling and downlink control information DCI signaling.
  • the MAC signaling indicates the indices of the multiple positioning reference signals
  • the DCI signaling indicates the adjustment mode of the transmission power of the multiple positioning reference signals. Accordingly, device #A receives the first information.
  • the MAC signaling includes a third bit field, where the third bit field includes M bits, each of the M bits corresponds to a positioning reference signal, and M is a positive integer greater than or equal to 1.
  • the first preset value may be 1
  • the MAC signaling indicates that the transmit power of the positioning reference signal corresponding to the bit needs to be adjusted .
  • the fourth preset value may be 0, and the MAC signaling indicates that the transmit power of the positioning reference signal corresponding to the bit does not need to be Adjustment.
  • the number of bits included in the third bit field is greater than or equal to the number of all positioning reference signals sent by the device #A. That is, the total number of bits included in the third bit field is greater than or equal to M, that is, the M bits may be only a part of the bits in the third bit field. For example, if device #A sends a total of 6 positioning reference signals, M is 6; if device #A sends a total of 8 positioning reference signals, then M is 8, and the total number of bits in the third bit field may be 64.
  • the third bit field has a total of 10 bits, and device #A has sent a total of 8 positioning reference signals, then the 8 bits in the third bit field are used to indicate the 8 positioning reference signals, assuming that they are from right to left. 8 bits, and the 8 bits from right to left can represent 8 positioning reference signals indexed from 0 to 7 in sequence.
  • the first information received by the first access network device from the LMF includes indices of the two positioning reference signals and information of an adjustment manner corresponding to each positioning reference signal.
  • the index of the first positioning reference signal is 0, and the adjustment method is to reduce it by 0.3dB.
  • the index of the fourth positioning reference signal is 3, and the adjustment method is to reduce it by 0.3 dB.
  • the first access network device indicates the indices of the above two positioning reference signals through MAC signaling, and the format of the MAC signaling may be as shown in Table 2.
  • the value of the first bit from right to left in Table 2 is 1, indicating that the transmit power of the positioning reference signal with index 0 needs to be adjusted; the fourth bit is 1, indicating that the transmission power of the positioning reference signal with index 3 The transmit power needs to be adjusted.
  • the first access network device indicates an adjustment manner of the first positioning reference signal and the fourth positioning reference signal through DCI signaling.
  • the first information received by the first access network device from the LMF includes indexes of four positioning reference signals and information on an adjustment manner corresponding to each positioning reference signal.
  • the index of the first positioning reference signal is 0, and the adjustment method is to reduce it by 0.3dB.
  • the index of the third positioning reference signal is 2, and the adjustment method is to reduce it by 0.3dB.
  • the index of the fifth positioning reference signal is 4, and the adjustment method is to increase by 0.3dB.
  • the index of the seventh positioning reference signal is 6, and the adjustment method is to increase by 0.3dB.
  • the first access network device can indicate through two MAC signaling
  • the indices of the above four positioning reference signals correspondingly indicate the adjustment modes of the above four positioning reference signals through two DCI signaling.
  • the format of MAC signaling #1 may be as shown in Table 3, and the format of MAC signaling #2 may be as shown in Table 4.
  • the value of the first bit from right to left in Table 3 is 1, indicating that the transmit power of the positioning reference signal with index 0 needs to be adjusted; the third bit is 1, indicating that the positioning reference signal with index 2 The transmit power needs to be adjusted.
  • the first access network device indicates the adjustment mode of the first positioning reference signal and the third positioning reference signal through DCI signaling #1.
  • the fifth bit from right to left in Table 4 is 1, indicating that the transmit power of the positioning reference signal with index 4 needs to be adjusted; the seventh bit is 1, indicating that the positioning reference signal with index 6 The transmit power needs to be adjusted.
  • the first access network device indicates an adjustment manner of the fifth positioning reference signal and the seventh positioning reference signal through DCI signaling #2.
  • the positioning reference signal used to indicate the transmission power to be adjusted cannot target one or more specific positioning reference signals, or it will cause relatively high physical layer bit signaling overhead.
  • the use of the MAC signaling can more flexibly indicate the positioning reference signal whose transmission power is to be adjusted, thereby saving the signaling overhead of the physical layer.
  • Device #A determines the transmit power of the positioning reference signal according to the first information and the second information.
  • the first information includes index information of the first positioning reference signal and information on an adjustment manner of the transmission power of the first positioning reference signal.
  • the information on the adjustment manner of the transmit power of the first positioning reference signal only includes increasing or decreasing the transmit power of the first positioning reference signal.
  • device #A may determine the third transmit power of the first positioning reference signal according to the preconfigured adjustment amount.
  • the information on the adjustment manner of the transmission power of the first positioning reference signal includes increasing or decreasing the transmission power of the first positioning reference signal, and the adjustment amount of the transmission power of the first positioning reference signal .
  • the device #A may determine the third transmit power of the first positioning reference signal only according to the first information.
  • the device #A determines that the transmit power of the first positioning reference signal is the minimum transmit power. When the third transmit power is greater than the minimum transmit power and less than the maximum transmit power of the device #A, the device #A determines that the transmit power of the first positioning reference signal is the third transmit power. When the third transmission power is greater than the maximum transmission power of the device #A, the device #A determines that the transmission power of the first positioning reference signal is the maximum transmission power.
  • the positioning management device receives N pieces of quality information fed back by N pieces of access network equipment, and when the N pieces of quality information meet certain conditions, adjusts the transmission power of the positioning reference signal, so that the transmission of the positioning reference signal can be improved.
  • the power is kept within a reasonable range, which can not only meet the accuracy requirements for the positioning of the terminal equipment, but also avoid excessive power consumption of the terminal equipment.
  • FIG. 4 is a communication device provided by an embodiment of the application, and the communication device includes a transceiver unit 401 and a processing unit 402 .
  • the transceiver unit 401 may be used to implement the receiving and sending functions in the method embodiment. Other functions in the method embodiment may be implemented by the processing unit 402 .
  • the transceiver unit may be implemented by an input interface and an output interface in the data processing chip, and the sending and receiving in the method embodiment correspond to the output and the input in the chip respectively.
  • the transceiver unit 401 can also be divided into a receiving unit and a sending unit, the receiving unit can be used to implement the receiving function in the method embodiment, and the transmitting unit can be used to implement the sending function in the method embodiment.
  • the receiving unit can be realized through the output interface in the data processing chip, and the sending unit can be realized through the input interface of the data processing chip.
  • the transceiver unit and the processing unit may be implemented by the same chip, which is not limited in this application. It should be understood that the transceiver unit 401 in this embodiment of the present application may also be implemented by a transceiver (including a transmitter and a receiver) or a transceiver-related circuit component, and the processing unit 402 may also be implemented by a processor or a processor-related circuit component (or, called the processing circuit) implementation.
  • the communication device may be a communication device device, or a chip applied in the communication device device, or other combined devices, components, etc., which have the functions of the above-mentioned communication device device.
  • the transceiver unit 401 and the processing unit 402 can support the actions performed by the positioning management device or the LMF in the above method examples.
  • the transceiver unit 401 can complete the receiving N pieces of measurement information sent by the N access network devices, sending the first information to the terminal device, and other processes in the technical solutions described herein in the above method embodiments; the processing unit 402
  • the determination of whether to adjust the transmission power of the first positioning reference signal, the determination of the adjustment value of the transmission power of the first positioning reference signal, and other processes in the technical solutions described herein can be performed in the above method embodiments.
  • the transceiver unit 401 and the processing unit 402 can support the actions performed by the access network device in the foregoing method example.
  • the transceiver unit 401 can complete the sending of information #A, the reception of the second request message, and other processes in the technical solutions described in the above method embodiments;
  • the processing unit 402 can complete the measurement of the positioning reference signal, and the Other processes in the described technical solutions.
  • the transceiver unit 401 and the processing unit 402 can support the actions performed by the terminal device in the above method examples.
  • the transceiver unit 401 can complete the sending of the positioning reference signal in the solution of the present application and other processes in the technical solutions described herein;
  • the processing unit 402 can complete the determination of the first transmission power of the first positioning reference signal in the solution of the present application , determining the third transmit power of the first positioning reference signal, and other processes in the technical solutions described herein.
  • An embodiment of the present application further provides a communication device, as shown in FIG. 5 , including: a processor 501 , a communication interface 502 , and a memory 503 .
  • the processor 501, the communication interface 502 and the memory 503 can be connected to each other through a bus 505; the bus 505 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus etc.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the above-mentioned bus 505 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 5, but it does not mean that there is only one bus or one type of bus.
  • the processor 501 may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP.
  • the processor may further include a hardware chip.
  • the above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • Memory 503 may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • the processor 501 is used to implement data processing operations of the communication device.
  • the communication interface 502 is used to realize the transceiving operation of the communication device.
  • the processor 501, the communication interface 502 and the memory 503 can support the actions performed by the location management device or the LMF in the above method examples.
  • the processor 501, the communication interface 502 and the memory 503 can support the actions performed by the access network device in the above method examples.
  • the processor 501, the communication interface 502 and the memory 503 can support the actions performed by the terminal device in the above method examples.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal device in this embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or user device.
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or future evolved public land mobile networks (PLMN)
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • a terminal device, etc. is not limited in this embodiment of the present application.
  • the network device in this embodiment of the present application may be a device used to communicate with a terminal device, and the network device may be an evolved access network device (evolutional nodeB, eNB or eNodeB) in an LTE system, or a cloud wireless access network device.
  • evolutional nodeB, eNB or eNodeB evolved access network device
  • a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network.
  • Network devices and the like are not limited in the embodiments of the present application.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

Abstract

La présente demande concerne un procédé et un appareil permettant de régler la puissance d'émission d'un signal de référence, ledit procédé comprenant les étapes suivantes : un dispositif de gestion de positionnement reçoit N éléments d'informations de qualité envoyés par N dispositifs de réseau d'accès, et lorsque le nombre d'informations de qualité supérieur à un premier seuil parmi les N éléments d'informations de qualité est inférieur à un deuxième seuil ou supérieur à un troisième seuil, le dispositif de gestion de positionnement envoie des premières informations à un dispositif terminal, les premières informations indiquant de régler la puissance d'émission d'un premier signal de référence de positionnement. Selon la solution de la présente demande, la puissance d'émission d'un signal de référence de positionnement peut être maintenue dans une plage raisonnable au moyen de la gestion et de la commande d'un dispositif de gestion de positionnement, ce qui permet non seulement de satisfaire des exigences de précision pour le positionnement d'un dispositif terminal, mais également d'empêcher une consommation excessive d'énergie du dispositif terminal.
PCT/CN2022/087342 2021-04-30 2022-04-18 Procédé et appareil de réglage de la puissance d'émission d'un signal de référence WO2022228171A1 (fr)

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